Protective helmet cover



FIG. 1 is a perspective view, taken from top, right, front, of a protective helmet cover according to our design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side view thereof

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front side view thereof; and,

FIG. 7 is a rear side view thereof.

The details shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a protective helmet cover, as shown and described. 